/**
* Checks file access for calculated multiple-choice questions.
*
* @package qtype_calculatedmulti
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @return bool
*/
function qtype_calculatedmulti_pluginfile($course, $cm, $context, $filearea, $args,
$forcedownload) {
global $DB, $CFG;
require_once($CFG->libdir . '/questionlib.php');
question_pluginfile($course, $context, 'qtype_calculatedmulti', $filearea, $args,
$forcedownload);
}
/**
* Checks file access for calculated questions.
*
* @package qtype_calculated
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @param array $options additional options affecting the file serving
* @return bool
*/
function qtype_calculated_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array())
{
global $CFG;
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'qtype_calculated', $filearea, $args, $forcedownload, $options);
}
/**
* This function delegates file serving to individual plugins
*
* @param string $relativepath
* @param bool $forcedownload
* @param null|string $preview the preview mode, defaults to serving the original file
* @todo MDL-31088 file serving improments
*/
function file_pluginfile($relativepath, $forcedownload, $preview = null)
{
global $DB, $CFG, $USER;
// relative path must start with '/'
if (!$relativepath) {
print_error('invalidargorconf');
} else {
if ($relativepath[0] != '/') {
print_error('pathdoesnotstartslash');
}
}
// extract relative path components
$args = explode('/', ltrim($relativepath, '/'));
if (count($args) < 3) {
// always at least context, component and filearea
print_error('invalidarguments');
}
$contextid = (int) array_shift($args);
$component = clean_param(array_shift($args), PARAM_COMPONENT);
$filearea = clean_param(array_shift($args), PARAM_AREA);
list($context, $course, $cm) = get_context_info_array($contextid);
$fs = get_file_storage();
// ========================================================================================================================
if ($component === 'blog') {
// Blog file serving
if ($context->contextlevel != CONTEXT_SYSTEM) {
send_file_not_found();
}
if ($filearea !== 'attachment' and $filearea !== 'post') {
send_file_not_found();
}
if (empty($CFG->enableblogs)) {
print_error('siteblogdisable', 'blog');
}
$entryid = (int) array_shift($args);
if (!($entry = $DB->get_record('post', array('module' => 'blog', 'id' => $entryid)))) {
send_file_not_found();
}
if ($CFG->bloglevel < BLOG_GLOBAL_LEVEL) {
require_login();
if (isguestuser()) {
print_error('noguest');
}
if ($CFG->bloglevel == BLOG_USER_LEVEL) {
if ($USER->id != $entry->userid) {
send_file_not_found();
}
}
}
if ($entry->publishstate === 'public') {
if ($CFG->forcelogin) {
require_login();
}
} else {
if ($entry->publishstate === 'site') {
require_login();
//ok
} else {
if ($entry->publishstate === 'draft') {
require_login();
if ($USER->id != $entry->userid) {
send_file_not_found();
}
}
}
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, $entryid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
send_stored_file($file, 10 * 60, 0, true, array('preview' => $preview));
// download MUST be forced - security!
// ========================================================================================================================
} else {
if ($component === 'grade') {
if (($filearea === 'outcome' or $filearea === 'scale') and $context->contextlevel == CONTEXT_SYSTEM) {
// Global gradebook files
if ($CFG->forcelogin) {
require_login();
}
$fullpath = "/{$context->id}/{$component}/{$filearea}/" . implode('/', $args);
if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'feedback' and $context->contextlevel == CONTEXT_COURSE) {
//TODO: nobody implemented this yet in grade edit form!!
send_file_not_found();
if ($CFG->forcelogin || $course->id != SITEID) {
require_login($course);
}
$fullpath = "/{$context->id}/{$component}/{$filearea}/" . implode('/', $args);
if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
}
// ========================================================================================================================
} else {
if ($component === 'tag') {
if ($filearea === 'description' and $context->contextlevel == CONTEXT_SYSTEM) {
// All tag descriptions are going to be public but we still need to respect forcelogin
if ($CFG->forcelogin) {
require_login();
}
$fullpath = "/{$context->id}/tag/description/" . implode('/', $args);
if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, true, array('preview' => $preview));
} else {
send_file_not_found();
}
// ========================================================================================================================
} else {
if ($component === 'badges') {
require_once $CFG->libdir . '/badgeslib.php';
$badgeid = (int) array_shift($args);
$badge = new badge($badgeid);
$filename = array_pop($args);
if ($filearea === 'badgeimage') {
if ($filename !== 'f1' && $filename !== 'f2') {
send_file_not_found();
}
if (!($file = $fs->get_file($context->id, 'badges', 'badgeimage', $badge->id, '/', $filename . '.png'))) {
send_file_not_found();
}
\core\session\manager::write_close();
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'userbadge' and $context->contextlevel == CONTEXT_USER) {
if (!($file = $fs->get_file($context->id, 'badges', 'userbadge', $badge->id, '/', $filename . '.png'))) {
send_file_not_found();
}
\core\session\manager::write_close();
send_stored_file($file, 60 * 60, 0, true, array('preview' => $preview));
}
}
// ========================================================================================================================
} else {
if ($component === 'calendar') {
if ($filearea === 'event_description' and $context->contextlevel == CONTEXT_SYSTEM) {
// All events here are public the one requirement is that we respect forcelogin
if ($CFG->forcelogin) {
require_login();
}
// Get the event if from the args array
$eventid = array_shift($args);
// Load the event from the database
if (!($event = $DB->get_record('event', array('id' => (int) $eventid, 'eventtype' => 'site')))) {
send_file_not_found();
}
// Get the file and serve if successful
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, $eventid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'event_description' and $context->contextlevel == CONTEXT_USER) {
// Must be logged in, if they are not then they obviously can't be this user
require_login();
// Don't want guests here, potentially saves a DB call
if (isguestuser()) {
send_file_not_found();
}
// Get the event if from the args array
$eventid = array_shift($args);
// Load the event from the database - user id must match
if (!($event = $DB->get_record('event', array('id' => (int) $eventid, 'userid' => $USER->id, 'eventtype' => 'user')))) {
send_file_not_found();
}
// Get the file and serve if successful
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, $eventid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, true, array('preview' => $preview));
} else {
if ($filearea === 'event_description' and $context->contextlevel == CONTEXT_COURSE) {
// Respect forcelogin and require login unless this is the site.... it probably
// should NEVER be the site
if ($CFG->forcelogin || $course->id != SITEID) {
require_login($course);
}
// Must be able to at least view the course. This does not apply to the front page.
if ($course->id != SITEID && !is_enrolled($context) && !is_viewing($context)) {
//TODO: hmm, do we really want to block guests here?
send_file_not_found();
}
// Get the event id
$eventid = array_shift($args);
// Load the event from the database we need to check whether it is
// a) valid course event
// b) a group event
// Group events use the course context (there is no group context)
if (!($event = $DB->get_record('event', array('id' => (int) $eventid, 'courseid' => $course->id)))) {
send_file_not_found();
}
// If its a group event require either membership of view all groups capability
if ($event->eventtype === 'group') {
if (!has_capability('moodle/site:accessallgroups', $context) && !groups_is_member($event->groupid, $USER->id)) {
send_file_not_found();
}
} else {
if ($event->eventtype === 'course' || $event->eventtype === 'site') {
// Ok. Please note that the event type 'site' still uses a course context.
} else {
// Some other type.
send_file_not_found();
}
}
// If we get this far we can serve the file
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, $eventid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
}
}
// ========================================================================================================================
} else {
if ($component === 'user') {
if ($filearea === 'icon' and $context->contextlevel == CONTEXT_USER) {
if (count($args) == 1) {
$themename = theme_config::DEFAULT_THEME;
$filename = array_shift($args);
} else {
$themename = array_shift($args);
$filename = array_shift($args);
}
// fix file name automatically
if ($filename !== 'f1' and $filename !== 'f2' and $filename !== 'f3') {
$filename = 'f1';
}
if ((!empty($CFG->forcelogin) and !isloggedin()) || !empty($CFG->forceloginforprofileimage) && (!isloggedin() || isguestuser())) {
// protect images if login required and not logged in;
// also if login is required for profile images and is not logged in or guest
// do not use require_login() because it is expensive and not suitable here anyway
$theme = theme_config::load($themename);
redirect($theme->pix_url('u/' . $filename, 'moodle'));
// intentionally not cached
}
if (!($file = $fs->get_file($context->id, 'user', 'icon', 0, '/', $filename . '.png'))) {
if (!($file = $fs->get_file($context->id, 'user', 'icon', 0, '/', $filename . '.jpg'))) {
if ($filename === 'f3') {
// f3 512x512px was introduced in 2.3, there might be only the smaller version.
if (!($file = $fs->get_file($context->id, 'user', 'icon', 0, '/', 'f1.png'))) {
$file = $fs->get_file($context->id, 'user', 'icon', 0, '/', 'f1.jpg');
}
}
}
}
if (!$file) {
// bad reference - try to prevent future retries as hard as possible!
if ($user = $DB->get_record('user', array('id' => $context->instanceid), 'id, picture')) {
if ($user->picture > 0) {
$DB->set_field('user', 'picture', 0, array('id' => $user->id));
}
}
// no redirect here because it is not cached
$theme = theme_config::load($themename);
$imagefile = $theme->resolve_image_location('u/' . $filename, 'moodle', null);
send_file($imagefile, basename($imagefile), 60 * 60 * 24 * 14);
}
$options = array('preview' => $preview);
if (empty($CFG->forcelogin) && empty($CFG->forceloginforprofileimage)) {
// Profile images should be cache-able by both browsers and proxies according
// to $CFG->forcelogin and $CFG->forceloginforprofileimage.
$options['cacheability'] = 'public';
}
send_stored_file($file, 60 * 60 * 24 * 365, 0, false, $options);
// enable long caching, there are many images on each page
} else {
if ($filearea === 'private' and $context->contextlevel == CONTEXT_USER) {
require_login();
if (isguestuser()) {
send_file_not_found();
}
if ($USER->id !== $context->instanceid) {
send_file_not_found();
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, true, array('preview' => $preview));
// must force download - security!
} else {
if ($filearea === 'profile' and $context->contextlevel == CONTEXT_USER) {
if ($CFG->forcelogin) {
require_login();
}
$userid = $context->instanceid;
if ($USER->id == $userid) {
// always can access own
} else {
if (!empty($CFG->forceloginforprofiles)) {
require_login();
if (isguestuser()) {
send_file_not_found();
}
// we allow access to site profile of all course contacts (usually teachers)
if (!has_coursecontact_role($userid) && !has_capability('moodle/user:viewdetails', $context)) {
send_file_not_found();
}
$canview = false;
if (has_capability('moodle/user:viewdetails', $context)) {
$canview = true;
} else {
$courses = enrol_get_my_courses();
}
while (!$canview && count($courses) > 0) {
$course = array_shift($courses);
if (has_capability('moodle/user:viewdetails', context_course::instance($course->id))) {
$canview = true;
}
}
}
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, $component, $filearea, 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, true, array('preview' => $preview));
// must force download - security!
} else {
if ($filearea === 'profile' and $context->contextlevel == CONTEXT_COURSE) {
$userid = (int) array_shift($args);
$usercontext = context_user::instance($userid);
if ($CFG->forcelogin) {
require_login();
}
if (!empty($CFG->forceloginforprofiles)) {
require_login();
if (isguestuser()) {
print_error('noguest');
}
//TODO: review this logic of user profile access prevention
if (!has_coursecontact_role($userid) and !has_capability('moodle/user:viewdetails', $usercontext)) {
print_error('usernotavailable');
}
if (!has_capability('moodle/user:viewdetails', $context) && !has_capability('moodle/user:viewdetails', $usercontext)) {
print_error('cannotviewprofile');
}
if (!is_enrolled($context, $userid)) {
print_error('notenrolledprofile');
}
if (groups_get_course_groupmode($course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
print_error('groupnotamember');
}
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($usercontext->id, 'user', 'profile', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, true, array('preview' => $preview));
// must force download - security!
} else {
if ($filearea === 'backup' and $context->contextlevel == CONTEXT_USER) {
require_login();
if (isguestuser()) {
send_file_not_found();
}
$userid = $context->instanceid;
if ($USER->id != $userid) {
send_file_not_found();
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'user', 'backup', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, true, array('preview' => $preview));
// must force download - security!
} else {
send_file_not_found();
}
}
}
}
}
// ========================================================================================================================
} else {
if ($component === 'coursecat') {
if ($context->contextlevel != CONTEXT_COURSECAT) {
send_file_not_found();
}
if ($filearea === 'description') {
if ($CFG->forcelogin) {
// no login necessary - unless login forced everywhere
require_login();
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'coursecat', 'description', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
// ========================================================================================================================
} else {
if ($component === 'course') {
if ($context->contextlevel != CONTEXT_COURSE) {
send_file_not_found();
}
if ($filearea === 'summary' || $filearea === 'overviewfiles') {
if ($CFG->forcelogin) {
require_login();
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'course', $filearea, 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'section') {
if ($CFG->forcelogin) {
require_login($course);
} else {
if ($course->id != SITEID) {
require_login($course);
}
}
$sectionid = (int) array_shift($args);
if (!($section = $DB->get_record('course_sections', array('id' => $sectionid, 'course' => $course->id)))) {
send_file_not_found();
}
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'course', 'section', $sectionid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
}
} else {
if ($component === 'cohort') {
$cohortid = (int) array_shift($args);
$cohort = $DB->get_record('cohort', array('id' => $cohortid), '*', MUST_EXIST);
$cohortcontext = context::instance_by_id($cohort->contextid);
// The context in the file URL must be either cohort context or context of the course underneath the cohort's context.
if ($context->id != $cohort->contextid && ($context->contextlevel != CONTEXT_COURSE || !in_array($cohort->contextid, $context->get_parent_context_ids()))) {
send_file_not_found();
}
// User is able to access cohort if they have view cap on cohort level or
// the cohort is visible and they have view cap on course level.
$canview = has_capability('moodle/cohort:view', $cohortcontext) || $cohort->visible && has_capability('moodle/cohort:view', $context);
if ($filearea === 'description' && $canview) {
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (($file = $fs->get_file($cohortcontext->id, 'cohort', 'description', $cohort->id, $filepath, $filename)) && !$file->is_directory()) {
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
}
}
send_file_not_found();
} else {
if ($component === 'group') {
if ($context->contextlevel != CONTEXT_COURSE) {
send_file_not_found();
}
require_course_login($course, true, null, false);
$groupid = (int) array_shift($args);
$group = $DB->get_record('groups', array('id' => $groupid, 'courseid' => $course->id), '*', MUST_EXIST);
if ($course->groupmodeforce and $course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context) and !groups_is_member($group->id, $USER->id)) {
// do not allow access to separate group info if not member or teacher
send_file_not_found();
}
if ($filearea === 'description') {
require_login($course);
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'group', 'description', $group->id, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'icon') {
$filename = array_pop($args);
if ($filename !== 'f1' and $filename !== 'f2') {
send_file_not_found();
}
if (!($file = $fs->get_file($context->id, 'group', 'icon', $group->id, '/', $filename . '.png'))) {
if (!($file = $fs->get_file($context->id, 'group', 'icon', $group->id, '/', $filename . '.jpg'))) {
send_file_not_found();
}
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, false, array('preview' => $preview));
} else {
send_file_not_found();
}
}
} else {
if ($component === 'grouping') {
if ($context->contextlevel != CONTEXT_COURSE) {
send_file_not_found();
}
require_login($course);
$groupingid = (int) array_shift($args);
// note: everybody has access to grouping desc images for now
if ($filearea === 'description') {
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'grouping', 'description', $groupingid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
// ========================================================================================================================
} else {
if ($component === 'backup') {
if ($filearea === 'course' and $context->contextlevel == CONTEXT_COURSE) {
require_login($course);
require_capability('moodle/backup:downloadfile', $context);
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'backup', 'course', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'section' and $context->contextlevel == CONTEXT_COURSE) {
require_login($course);
require_capability('moodle/backup:downloadfile', $context);
$sectionid = (int) array_shift($args);
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'backup', 'section', $sectionid, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'activity' and $context->contextlevel == CONTEXT_MODULE) {
require_login($course, false, $cm);
require_capability('moodle/backup:downloadfile', $context);
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'backup', 'activity', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
} else {
if ($filearea === 'automated' and $context->contextlevel == CONTEXT_COURSE) {
// Backup files that were generated by the automated backup systems.
require_login($course);
require_capability('moodle/site:config', $context);
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'backup', 'automated', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 0, 0, $forcedownload, array('preview' => $preview));
} else {
send_file_not_found();
}
}
}
}
// ========================================================================================================================
} else {
if ($component === 'question') {
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'question', $filearea, $args, $forcedownload);
send_file_not_found();
// ========================================================================================================================
} else {
if ($component === 'grading') {
if ($filearea === 'description') {
// files embedded into the form definition description
if ($context->contextlevel == CONTEXT_SYSTEM) {
require_login();
} else {
if ($context->contextlevel >= CONTEXT_COURSE) {
require_login($course, false, $cm);
} else {
send_file_not_found();
}
}
$formid = (int) array_shift($args);
$sql = "SELECT ga.id\n FROM {grading_areas} ga\n JOIN {grading_definitions} gd ON (gd.areaid = ga.id)\n WHERE gd.id = ? AND ga.contextid = ?";
$areaid = $DB->get_field_sql($sql, array($formid, $context->id), IGNORE_MISSING);
if (!$areaid) {
send_file_not_found();
}
$fullpath = "/{$context->id}/{$component}/{$filearea}/{$formid}/" . implode('/', $args);
if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
send_file_not_found();
}
\core\session\manager::write_close();
// Unlock session during file serving.
send_stored_file($file, 60 * 60, 0, $forcedownload, array('preview' => $preview));
}
// ========================================================================================================================
} else {
if (strpos($component, 'mod_') === 0) {
$modname = substr($component, 4);
if (!file_exists("{$CFG->dirroot}/mod/{$modname}/lib.php")) {
send_file_not_found();
}
require_once "{$CFG->dirroot}/mod/{$modname}/lib.php";
if ($context->contextlevel == CONTEXT_MODULE) {
if ($cm->modname !== $modname) {
// somebody tries to gain illegal access, cm type must match the component!
send_file_not_found();
}
}
if ($filearea === 'intro') {
if (!plugin_supports('mod', $modname, FEATURE_MOD_INTRO, true)) {
send_file_not_found();
}
require_course_login($course, true, $cm);
// all users may access it
$filename = array_pop($args);
$filepath = $args ? '/' . implode('/', $args) . '/' : '/';
if (!($file = $fs->get_file($context->id, 'mod_' . $modname, 'intro', 0, $filepath, $filename)) or $file->is_directory()) {
send_file_not_found();
}
// finally send the file
send_stored_file($file, null, 0, false, array('preview' => $preview));
}
$filefunction = $component . '_pluginfile';
$filefunctionold = $modname . '_pluginfile';
if (function_exists($filefunction)) {
// if the function exists, it must send the file and terminate. Whatever it returns leads to "not found"
$filefunction($course, $cm, $context, $filearea, $args, $forcedownload, array('preview' => $preview));
} else {
if (function_exists($filefunctionold)) {
// if the function exists, it must send the file and terminate. Whatever it returns leads to "not found"
$filefunctionold($course, $cm, $context, $filearea, $args, $forcedownload, array('preview' => $preview));
}
}
send_file_not_found();
// ========================================================================================================================
} else {
if (strpos($component, 'block_') === 0) {
$blockname = substr($component, 6);
// note: no more class methods in blocks please, that is ....
if (!file_exists("{$CFG->dirroot}/blocks/{$blockname}/lib.php")) {
send_file_not_found();
}
require_once "{$CFG->dirroot}/blocks/{$blockname}/lib.php";
if ($context->contextlevel == CONTEXT_BLOCK) {
$birecord = $DB->get_record('block_instances', array('id' => $context->instanceid), '*', MUST_EXIST);
if ($birecord->blockname !== $blockname) {
// somebody tries to gain illegal access, cm type must match the component!
send_file_not_found();
}
if ($context->get_course_context(false)) {
// If block is in course context, then check if user has capability to access course.
require_course_login($course);
} else {
if ($CFG->forcelogin) {
// If user is logged out, bp record will not be visible, even if the user would have access if logged in.
require_login();
}
}
$bprecord = $DB->get_record('block_positions', array('contextid' => $context->id, 'blockinstanceid' => $context->instanceid));
// User can't access file, if block is hidden or doesn't have block:view capability
if ($bprecord && !$bprecord->visible || !has_capability('moodle/block:view', $context)) {
send_file_not_found();
}
} else {
$birecord = null;
}
$filefunction = $component . '_pluginfile';
if (function_exists($filefunction)) {
// if the function exists, it must send the file and terminate. Whatever it returns leads to "not found"
$filefunction($course, $birecord, $context, $filearea, $args, $forcedownload, array('preview' => $preview));
}
send_file_not_found();
// ========================================================================================================================
} else {
if (strpos($component, '_') === false) {
// all core subsystems have to be specified above, no more guessing here!
send_file_not_found();
} else {
// try to serve general plugin file in arbitrary context
$dir = core_component::get_component_directory($component);
if (!file_exists("{$dir}/lib.php")) {
send_file_not_found();
}
include_once "{$dir}/lib.php";
$filefunction = $component . '_pluginfile';
if (function_exists($filefunction)) {
// if the function exists, it must send the file and terminate. Whatever it returns leads to "not found"
$filefunction($course, $cm, $context, $filearea, $args, $forcedownload, array('preview' => $preview));
}
send_file_not_found();
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
/**
* Checks file access for easyonamejs questions.
*/
function qtype_easyonamejs_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload)
{
global $DB, $CFG;
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'qtype_easyonamejs', $filearea, $args, $forcedownload);
}
/**
* Checks file access for multiple choice questions.
*/
function qtype_ordering_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload)
{
global $CFG;
require_once $CFG->dirroot . '/lib/questionlib.php';
question_pluginfile($course, $context, 'qtype_ordering', $filearea, $args, $forcedownload);
}
send_file_not_found();
}
session_get_instance()->write_close();
// unlock session during fileserving
send_stored_file($file, 0, 0, $forcedownload);
} else {
send_file_not_found();
}
}
}
}
// ========================================================================================================================
} else {
if ($component === 'question') {
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'question', $filearea, $args, $forcedownload);
send_file_not_found();
// ========================================================================================================================
} else {
if (strpos($component, 'mod_') === 0) {
$modname = substr($component, 4);
if (!file_exists("{$CFG->dirroot}/mod/{$modname}/lib.php")) {
send_file_not_found();
}
require_once "{$CFG->dirroot}/mod/{$modname}/lib.php";
if ($context->contextlevel == CONTEXT_MODULE) {
if ($cm->modname !== $modname) {
// somebody tries to gain illegal access, cm type must match the component!
send_file_not_found();
}
}
/**
* Checks file access for poodllrecording questions.
*/
function qtype_poodllrecording_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload)
{
global $CFG;
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'qtype_poodllrecording', $filearea, $args, $forcedownload);
}
/**
* Checks file access for simple calculated questions.
*/
function qtype_calculatedsimple_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload)
{
global $CFG;
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'qtype_calculatedsimple', $filearea, $args, $forcedownload);
}
/**
* Checks file access for short answer questions.
* @package qtype_shortanswer
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @return bool
*/
function qtype_shortanswer_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
global $DB, $CFG;
require_once($CFG->libdir . '/questionlib.php');
question_pluginfile($course, $context, 'qtype_shortanswer', $filearea, $args, $forcedownload);
}
/**
* Checks file access for multiple choice questions.
*
* @package qtype_multichoice
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @return bool
*/
function qtype_multichoice_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
global $CFG;
require_once($CFG->libdir . '/questionlib.php');
question_pluginfile($course, $context, 'qtype_multichoice', $filearea, $args, $forcedownload);
}
/**
* Checks file access for omeromultichoice questions.
*
* @package qtype_omeromultichoice
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @param array $options additional options affecting the file serving
* @return bool
*/
function qtype_omeromultichoice_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array())
{
global $DB, $CFG;
require_once $CFG->libdir . '/questionlib.php';
question_pluginfile($course, $context, 'qtype_omeromultichoice', $filearea, $args, $forcedownload, $options);
}